It has nothing to do with the IT guy. GPS is based on getting information from 3 or 4 satellites. The more satellites that the DIAD is able to use to pin point a position the more accurate the location is going to be. Sometimes the DIAD doesn't pick up 4 satellites or even 3 so the GPS location can't be accurately determined that is why the DIAD beeps and blinks red....
or, the gps at the center is overriding your DIAD